Ice-making apparatus.



No. 680,088. Patented Aug. 6, I901.

' E. J. ULLBICH.

ICE MAKING ,APPARATUS.

I (Application filed Eeb. 16, 1901.)

(No Model.)

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UNITED STATES PATENT OFFICE.

EDGAR J. ULLRIOH, OF COLORADO SPRINGS, COLORADO.

ICE-MAKING APPARATUS.

SPECIFICATION formingpart of Letters Patent No. 680,088, dated August 6,1901.

Application filed February 16, 1901.

- for use in the manufacture of ice by the can system according to thedeaerating process.

My improvements are adapted more especially for use Where only a limitedquantity of ice is to be made and in comparatively small cakes, thoughit may be found desirable both where ice in large quantities is to bemade and in large cakes.

In the ice-making system to which my invention is adapted a can of waterto be frozen is placed between the coils of refrigerating-pipes andusually immersed in brine or the like refrigerating liquid, anddeaeration of the water in the can during the freezing process isproduced by compressed air or gas pipes discharging into the lower partof the can. It is inconvenient sometimes for various reasons to pipe thecompressed air or gas to the cans from a compressing-machine, and myobject is to provide a construction which dispenses with such piping.

In carrying out my invention I provide in connection with each can areservoir for containing compressed air or gas and a preferably valvedpassage between the reservoir and can through which the compressed airor gas may pass in a comparatively fine jet into the bottom of the can.The can and reservoir are in one piece or secured together in such a waythat they may be inserted into and removed from the brine-tank orrefrigcrating-coils together.

In the drawings I show one approved way of carrying out my invention.

Figure 1 is a broken sectional view of a brine-tank andrefrigerating-coils with the ice-making can in place and provided withan air or gas supply reservoir, and Fig. 2 a broken view showing the endof a can and reservoir.

A represents a brine-tank, and B refriger ating-coils therein; 0, anice-making can,

Serial No. 47,576. (No model.)

bottom of the can is an air or gas conducting pipe E, provided with avalve F. The valve F may be a regulating, shut-off, and check valve;Also upon the reservoir D is a valve 0, through which the reservoir maybe charged with compressed air or gas.

In operation while the can and reservoir are withdrawn from the tank Athe reservoir D is filled with air or gas, preferably under greatpressure, and the can 0 is filled with water to be deaerated and frozen.The valve F is then opened to permit air or gas under pressure to flowthrough the very small opening (1 into the base of the can. The degreeof pressure under which the reservoir is charged, the size of thereservoir, and the size of the passage 01 should be such with relationto each other that a jet of air of sufficient size and force will beinjected into the base of the can during the entire freezing operation.Proportions in the drawings are necessarily exaggerated for the purposeof illustration. When the cake of ice is formed in the can 0, the can,with the reservoir D and the pipe connection, may be withdrawn from thetank, the cake of ice discharged, and the apparatus made ready for asecond oporation. It is desirable that the compressed air or gascontained in the reservoir D shall be perfectly dry in order that nomoisture may collect in the reservoir or pipe E which might be frozenduring the ice-making operation. As an additional safeguard I prefer toinsulate the reservoir D, pipe E, and valve F, and particularly the saidpipe and valve, so that the surrounding cold may not penetrate it andfreeze any moisture contained in the passage 61. The pipe E and valvemay be surrounded by a wall 6, forming a deadair space about them, andthe stem f of the valve F may pass through a stuffing-box in the Wall e.

The construction shown and described may obviously be modified in thematter of details without departing from the spirit of my invention asdefined by the claims.

What I claim as new, and desire to secure by Letters Patent, is-

1. In an ice-making apparatus, the combination with the freezing means,of an icemaking can, aelosed compressed air or gas supplying reservoir,and an air or gas dis charge passage extending from the reservoir intothe lower part of the can, the said can and reservoir being attached toeach other and adapted to be inserted into and removed from the saidfreezing means together.

2. In an ice-making apparatus, the combination with the freezing means,of an icemaking can, a closed compressed air or gas supplying reservoir,and a valved air or gas discharge passage extending from the reservoirinto the lower part of the can, the said can and reservoir beingattached to each other and adapted to be inserted into and removed fromthe said freezing means together.

3. In an ice-making apparatus, the combination with the freezing means,of an icemaking can, a closed compressed air or gas supplying reservoir,and an insulated air or gas discharge passage extending from thereservoir into the lower part of the can, the said can and reservoirbeing attached to each other and adapted to be inserted into and removedfrom the said freezing means together.

EDGAR J. ULLBICH.

In presence of'- J. H. LEE, ALBERT D. BAOCI.

